Improved amalgamating-pan



To all 'whom 'it may concern;

UNITED t STATES PATENT OFFICE.

SMITH W. BULLOCK, OF ELIZABETH, NEW, JERSEY, ASSIGNOR TO THE BUL- LOCK-ORE DRESSING MACHINE COMPANY OF NEW YORK.

` IMPRovEDAMALGAMATiNG-PAN.

l' `Speciiicaliou forming p'nrt of Letters Pat-ent N 0.118,4 S0, dated June 27, 1865.

Be it known that I SMITH W; BULLocK, of

Elizabeth, in the county 'of "Union,v State of New Jersey, have inventedVa new and lmproved Amalgamating-Pan; and I do hereby declarethefollowing to be a full and exact dc scription-thereof, reference being,had to4 the "'uccoinpanying drawings and :the letters of ref-`erence-marked thereon.- To enable others,skilled`in thefart to'lnake anduse .myinventioinfl will proceed to describe its constructionundoperation, reference being had to the accompanyingdrawiugs, inwhich'like letters represent like parts in each igure. i l

Figure 1 is at top view. .j Fig.' 2 is a eut section vertically throughthe center.'

'In the drawings, A representsfive pieces of wood, constitutinga frameto support and hold the various parts of, the machine in their respective and relative positions 5 B, :roast-iron pan with center hnb;'0,a shaft secured to the frame A in 'journal-bmres, as shown in drawings;D,a.rol1er .With an'elastic jacket g .E, a plate or disk attached toshaft; F,ashaft to which the rollerl) is attached G, a shaft to whichthe plate E is attached. H is astepplate to receive the shaft C. l I areliourna'lboxes attached to wood frame to support shafts 0, F, and y Imake the frame A 4ot' woodor other material,suflcientl y large and heavytoreceive and support the pan B and shafts C, li`,and G. .I make the panB of iron orother material, six feet in diameter, more or less, andtwelve inches deep, more or less, with a center hub fit-ted to receivethe shaft. 0. The shaft O is tte'd into `the hub of the pan B andsecured there by keys orset-screws, or` otherwise, at a short distancefrom the lower end, and the shaft placed in the jon-rn al-boxes on thecenter of the frame A.' Ialso prepare a step-plate, H, about one footsquare, with a recess in the center to receive the lower end. of theshaft G, and secure it to the bottom part ot' the frame 'A, as shownupon the drawings I now place theshaft F, with the roller D attached,into the journal-boxes upon onesideof the frame, so as to bring theroller D within the pan B, and suspend the shaft in the boxes bya collarupon the shaft, so as to bring the roller D within f three inches(moreor less) of the bottom ofthe l lpan B. I then 'place thesl1at'tG,with the plate E attached, iii thejouruallboxeson the otherlside of' the i'ran1e,so as tosibringthe plate wi thin and against theinside and near the' bottom of the pan B. I now attach the box-caps J Jto the frame A,- so as to secure the journal-boxes Vin their properplaces. These caps aresuiciently large to allow a rubber spring to, beplaced in.beside"the box for thepurpose of forcing the box (with shaltand plate or roller attached to it) against the inside of the .pan

with sucient force to turn or rotate them by friction as the pan i'sturned,and yet allow them to spring oft in case any hard substanceshould passbetween them and the inside of of the pan. The roller D alsohas a rubber or other elastic jacket over the outside. The inf *side 'ofthe outer rim of thepan B islined withy i a plate ot' amalgamatedcopper, of the width of the roller D, and placed in position in the pansc as to bear against the roller only. The machine is now complete.

Operation: I put my amalgamator in oper- 'ation bypiacin gacommonmachine-belt around `the outside of the pan, and passing it over acommon beltpulle ,which is being driven by some motive power ot'suicieutspeed to give the pan twenty turns per minute,more orless.

The object sought to be obtained by the use of this machine is" theseparationl of the precious metals from the gan gue, rock, orother substances with which they may be found. I therefore put'into this pan tenpounds of quicksilver, more or less, and then run into the pan the sandor ground ore containing the metal,

mixed up with water sufficient to holdit-in suspension, and set the panin motion, as before described, and continue to run in the ground oreand water. until the pau is nearly full. The

rotary motion of the pan gives a rotating inol tion to the' plute'E,andthe roller D, the face of the plate being set near the bottomfof thepan, by its cycloidal motion'or tracing over the surface gives thematerial a rubbing or scouring as it passes under it or between it andthe rim of the pan, producing a different eft'ect from the commonroller. The `roller D collects the heating particles of gold or silverand of the Quicksilver byits rotary motion, and

presses it hard against the copper plate. The

ec-zrlfeiiverupen the copper plete' is keptcleeu eine ue ,measure et"tiaeelestic jaclretepon the roller D, se thetjellehe gelei, silver,copper, and Quicksilver tiret passes between the roller and thepletebecomes immediately attached tothe pietein the form of eme-lgem,whilethegauges alud dirtere Wesizferl away by the Water. The particles oi' geldtee-t ere er' euileient-specitic gravi-ty te preeijeitete tethe bottomofthe pen are rubbed inte 'eli-e Quicksilver 'by the plate E iu the:form et' amalgam, while the liet-is. washed away, en@ thesssepare-tiouis eeetcd.

The, relier 12S' eerfthe plete E may be so" arreu geil 'es to be 'drivenloy gear or blank'wheels or pulleys attached to the shafts F and G, emito the pau B, or ou 'it wheel prepared for .the purpose end attached tothe shaft U; instead -ci' the peu, end/of lsuch relative diameters as tegive the roller D and the plete Ee. greater erless epeethau they'wculdhere it' simply Vgrivee,by .friction against-therme.

What I claim iu the foregoing smeeiticetiouv .ree tem eey oxide er.flirt 'by the contie-` 'I I kl, for the purposes described.

j 3. The application 'of lgeen' or blank wheels or of haudpulc'ys to,the sheft's'C, Ffand G aud to the pen B, for the purposes herein set lforth.

4. -The appiicationof au elastic coatiugor jacket to the roller D, iucombine-tion with en .amelgameted plete of copper or'other metal, forthe purposes herein set forth, each of the several features beingarranged substantie-ily .esami for the purposes described.

SMITH W. BULLOCK. y [L. SJ

Witnesses:

THEO. J. ALLEN, Tecs. L. DALTON.

